Virtual Private Routed Network Services
7750 SR OS Services Guide Page 1261
preferred-lifetime
Syntax preferred-lifetime [seconds | infinite]
no preferred-lifetime
Context config>service>vprn>sub-if>group-if>ipv6>router-ad>prefix-op
config>service>vprn>sub-if>group-if>ipv6>dhcp6>proxy-server
Description This command configures the remaining length of time in seconds that this prefix will continue to be
preferred, such as, time until deprecation. The address generated from a deprecated prefix should not
be used as a source address in new communications, but packets received on such an interface are
processed as expected.
Default 3600
Parameters seconds — Specifies a decimal time interval in seconds.
Values 0-4,294,967,295
infinite — Sepcifies a 0xffffffff value. Dec = 4,294,967,295.
valid-lifetime
Syntax valid-lifetime [seconds | infinite]
no valid-lifetime
Context config>service>vprn>sub-if>group-if>ipv6>router-ad>prefix-op
config>service>vprn>sub-if>group-if>ipv6>dhcp6>proxy-server
Description This command specifies the length of time, in seconds, that the prefix is valid for the purpose of on-
link determination. A value of all one bits (0xffffffff) represents infinity. The address generated from
an invalidated prefix should not appear as the destination or source address of a packet.
Default 86400
Parameters seconds — Specifies a decimal time interval in seconds.
Values 0-4,294,967,295
infinite — Sepcifies a 0xffffffff value. Dec = 4,294,967,295.
reachable-time
Syntax reachable-time milliseconds
no reachable-time
Context config>services>vprn>sub-if>group-if>ipv6>router-ad
Description This command configures how long this router should be considered reachable by other nodes on the
link after receiving a reachability confirmation.
Default no reachable-time
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